Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A5449A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N439AN · AIRBUS A-321neo · operated by BANK OF UTAH TRUSTEE

Hex
A5449A
Octal
51242232
Decimal
10,831,002
Country
US
Tail
N439AN
Type
A21N
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
481
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S A5449A.

Country allocation

The ICAO 24-bit address A5449A falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
AAL664 - 7 2026-07-16
AAL510 - 6 2026-06-25
AAL2778 American Airlines 6 2026-05-18
AAL2368 - 6 2026-06-24
AAL646 American Airlines 5 2026-06-22
AAL59 - 5 2026-07-16
AAL432 American Airlines 5 2026-05-28
AAL3276 - 5 2026-06-28
AAL3005 - 5 2026-07-03
AAL286 - 5 2026-06-25
AAL2722 - 5 2026-07-12
AAL205 - 5 2026-07-03
AAL824 - 4 2026-07-13
AAL693 - 4 2026-07-16
AAL692 American Airlines 4 2026-06-11
AAL3218 - 4 2026-07-14
AAL3202 American Airlines 4 2026-05-12
AAL2801 - 4 2026-07-17
AAL2719 American Airlines 4 2026-06-07
AAL2695 American Airlines 4 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL678Q PHX → CLT Jul 26, 17:30 UTCJul 26, 21:10 UTC3h 40m
2026-07-26 AAL769 - Jul 26, 12:55 UTCJul 26, 15:50 UTC2h 55m
2026-07-26 AAL2786 JFK → MIA Jul 26, 00:05 UTCJul 26, 03:05 UTC3h 0m
2026-07-25 AAL1057 BOS → PHX Jul 25, 17:15 UTCJul 25, 22:20 UTC5h 5m
2026-07-25 AAL1057 BOS → PHX Jul 25, 17:10 UTCJul 25, 22:19 UTC5h 9m
2026-07-25 AAL1416 PHL → BNA Jul 25, 15:05 UTCJul 25, 15:50 UTC45m
2026-07-25 AAL2695 DCA → ORD Jul 25, 08:45 UTCJul 25, 13:20 UTC4h 35m
2026-07-25 AAL2695 DCA → ORD Jul 25, 08:40 UTCJul 25, 13:19 UTC4h 39m
2026-07-25 AAL2426 MIA → SFO Jul 25, 01:55 UTCJul 25, 07:00 UTC5h 5m
2026-07-24 AAL2565 ORD → DFW Jul 24, 19:00 UTCJul 25, 00:10 UTC5h 10m
2026-07-24 AAL2565 ORD → DFW Jul 24, 11:40 UTCJul 24, 16:45 UTC5h 5m
2026-07-24 AAL918 LIM → MIA Jul 24, 04:15 UTCJul 24, 09:00 UTC4h 45m
2026-07-24 AAL1307 PHL → CHS Jul 24, 01:40 UTCJul 24, 02:00 UTC20m
2026-07-23 AAL1307 PHL → CHS Jul 23, 21:10 UTCJul 23, 22:50 UTC1h 40m
2026-07-23 AAL1307 PHL → CHS Jul 23, 21:07 UTCJul 24, 02:19 UTC5h 12m
2026-07-23 AAL315 JFK → MIA Jul 23, 13:45 UTCJul 23, 18:45 UTC5h 0m
2026-07-23 AAL3164 PSP → PHX Jul 23, 00:20 UTCJul 23, 05:45 UTC5h 25m
2026-07-22 AAL1100 BNA → DFW Jul 22, 20:15 UTCJul 22, 22:55 UTC2h 40m
2026-07-22 AAL1818 CLT → PHL Jul 22, 15:30 UTCJul 22, 17:25 UTC1h 55m
2026-07-22 AAL319R IAH → DFW Jul 22, 12:10 UTCJul 22, 14:10 UTC2h 0m
2026-07-22 AAL319R IAH → DFW Jul 22, 12:10 UTCJul 22, 14:05 UTC1h 55m
2026-07-22 AAL1322 DFW → DEN Jul 22, 01:30 UTCJul 22, 02:55 UTC1h 25m
2026-07-21 AAL1322 DFW → DEN Jul 21, 22:45 UTCJul 22, 00:15 UTC1h 30m
2026-07-21 AAL2633 SMF → DFW Jul 21, 18:10 UTCJul 21, 21:10 UTC3h 0m
2026-07-21 AAL2633 - Jul 21, 13:40 UTCJul 21, 16:30 UTC2h 50m
2026-07-21 AAL1670 PHL → DFW Jul 21, 09:20 UTCJul 21, 12:10 UTC2h 50m
2026-07-21 AAL2189 - Jul 21, 03:40 UTCJul 21, 05:05 UTC1h 25m
2026-07-21 AAL2189 CLT → PHL Jul 21, 03:39 UTCJul 21, 05:22 UTC1h 43m
2026-07-20 AAL1988 - Jul 20, 21:15 UTCJul 21, 01:35 UTC4h 20m
2026-07-20 AAL1988 LAX → CLT Jul 20, 21:13 UTCJul 21, 01:36 UTC4h 23m
2026-07-20 AAL1748 MCO → LAX Jul 20, 14:45 UTCJul 20, 19:20 UTC4h 35m
2026-07-20 AAL2093 - Jul 20, 11:10 UTCJul 20, 13:10 UTC2h 0m
2026-07-20 AAL2093 PHL → MCO Jul 20, 11:07 UTCJul 20, 13:05 UTC1h 58m
2026-07-20 AAL2093 PHL → PHL Jul 20, 10:35 UTCJul 20, 11:00 UTC25m
2026-07-20 AAL2189 - Jul 20, 03:00 UTCJul 20, 04:05 UTC1h 5m
2026-07-20 AAL2189 CLT → PHL Jul 20, 02:57 UTCJul 20, 04:04 UTC1h 7m
2026-07-19 AAL2529 ORD → MCO Jul 19, 20:45 UTCJul 20, 00:50 UTC4h 5m
2026-07-19 AAL2529 ORD → MCO Jul 19, 13:45 UTCJul 19, 18:30 UTC4h 45m
2026-07-19 AAL1580 - Jul 19, 07:15 UTCJul 19, 11:45 UTC4h 30m
2026-07-19 AAL1580 SFO → CLT Jul 19, 07:15 UTCJul 19, 11:45 UTC4h 30m
2026-07-19 AAL1580 - Jul 19, 00:50 UTCJul 19, 05:20 UTC4h 30m
2026-07-18 AAL1159 - Jul 18, 18:35 UTCJul 18, 23:00 UTC4h 25m
2026-07-18 AAL1159 LAX → CLT Jul 18, 18:34 UTCJul 18, 23:08 UTC4h 34m
2026-07-18 AAL2888 - Jul 18, 16:10 UTCJul 18, 16:50 UTC40m
2026-07-18 AAL2888 - Jul 18, 12:00 UTCJul 18, 12:10 UTC10m
2026-07-18 AAL1313 PHL → DEN Jul 18, 05:10 UTCJul 18, 10:30 UTC5h 20m
2026-07-18 AAL1313 PHL → DEN Jul 18, 05:07 UTCJul 18, 10:38 UTC5h 31m
2026-07-17 AAL2160 - Jul 17, 22:35 UTCJul 18, 03:00 UTC4h 26m
2026-07-17 AAL2801 - Jul 17, 16:59 UTCJul 17, 21:25 UTC4h 25m
2026-07-17 AAL2801 LAX → CUN Jul 17, 16:57 UTCJul 17, 21:22 UTC4h 25m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N439AN page for operator, model, and routing details .

Mode-S A5449A frequently asked

What is Mode-S code A5449A?
A5449A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N439AN.
Where is Mode-S A5449A registered?
Mode-S code A5449A is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A5449A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5449A, octal 51242232, decimal 10,831,002.
What flights does A5449A operate?
Mode-S A5449A has broadcast 20 distinct callsigns, including AAL664, AAL510, AAL2778, AAL2368, AAL646.